PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-18:57:30
G02     344.4          77.7               10.9 +/-    0.33      11.1 +/-    0.33  0.030 / 0.030
G05     166.9          34.1               15.0 +/-    1.18      24.3 +/-    1.18  0.030 / 0.030
G06     42.9           36.9                9.5 +/-    1.64      14.6 +/-    1.64  0.100 / 0.160
G12     302.3          75.4               12.6 +/-    0.80      12.9 +/-    0.80  0.130 / 0.140
G19     79.8           23.3                9.7 +/-    2.04      19.7 +/-    2.04  0.030 / 0.020
G24     227.1          20.7               11.9 +/-    1.64      25.6 +/-    1.64  0.030 / 0.020
G25     315.8          36.8               11.4 +/-    1.43      17.5 +/-    1.43  0.070 / 0.070
G29     289.9          12.8               13.4 +/-    0.89      35.1 +/-    0.89  0.070 / 0.080